When Fame and Addiction Run in the Family

"It was not just my father, but it was around where I was growing up. I mean, it's always been around me," Tatum O'Neal told Larry King about growing up around drugs and booze.

"Clearly if you are socialized in a family, in a community that is a high-drinking or high drug-use [one], then that becomes the norm to you," Cermak said.

"The challenge that young people of means or with famous parents have is they're raised differently," said Ed Diehl, CEO of New Jersey rehab center Seabrook House. "When they start to play around with alcohol and drugs, they find that they live in an environment where they are walled in and highly protected and have exceptional privilege."

That privilege can keep them from hitting bottom and getting sober.

"Wealth can both open the doors of treatment," Cermak said. "It can also protect people from the consequences. They get a DUI, they hire a great lawyer."

Here are some other high-profile families who have struggled with addiction:

The Lohans

Lindsay and Michael Lohan

After her third stint in rehab and her second arrest, Lindsay Lohan pleaded guilty to cocaine use and driving under the influence in August 2007 and was sentenced to one day in jail and 10 days community service.

In a statement released to the media, she said, "It is clear to me that my life has become completely unmanageable because I am addicted to alcohol and drugs."

Lindsay's father, Michael, has talked openly about his own struggles with drugs and alcohol. Since serving time on assault and DUI charges, he has maintained his sobriety by working as a counselor with a Christian ministry.

From 1996 to 2001, he was arrested on numerous drug-related charges. He was finally sentenced to a three-year prison term in 1999 when he told a judge, "It's like I have a loaded gun in my mouth and my finger's on the trigger, and I like the taste of the gunmetal."

Downey explained his many relapses by his early use of drugs, which he has said were introduced to him by his father, director Robert Downey Sr.

In an interview for the 1988 book "The New Breed," Downey said, "There was always a lot of pot and coke around."

Drugs, he said, became an emotional bond. "When my dad and I would do drugs together," explained Downey, "it was like him trying to express his love for me in the only way he knew how."

The Barrymores

Drew Barrymore, father John Drew Barrymore and grandfather John Barrymore

Barrymore, now 33, has admitted that she had her first drink at age 9, began smoking marijuana at 10 and took up cocaine at 12. By the time she turned 13, she had undergone extensive drug rehab -- twice.

Acting and addiction appear to be part of Barrymore's lineage. Her grandfather John Barrymore, a star of stage and screen in the 1920s and '30s, drank himself to death at age 60. Her aunt Diana Barrymore detailed her love for booze and drugs in the 1957 bestseller "Too Much, Too Soon."

And her father, John Drew Barrymore, a sometime actor and poet who never lived with her, had a history of alcoholism and drug arrests.

After a period in her late teens of appearing nude in Playboy and making five films, Barrymore cleaned up her act, choosing a successful string of romantic comedies, becoming a Cover Girl model and getting involved with a U.N. charity.